4) Warkel RL, Helwig EB: Apocrine gland adenoma and adenocarcinoma of the axilla. Arch Dermatol 114: 198-203, 1978.
5) Mazoujian G et al: Immunohistochemistory of gross cystic disease protein (GCDFP-15) of the breast: a marker of apocrine epithelium and breast carcinomas with apocrine features. Am J Pathol 110: 105-112, 1983.